Sources are used in a paper to show what ideas inspired you and whose theories you would be using and you cite the sources in order to avoid plagiarism. If you don't have sources, your paper will not be valid and you could get accused of plagiarism. The more sources you use the better but you should keep in mind that they need to be important for the paper and used with a purpose and not just to increase the number of sources.
Answer:
The probability of getting tails and spinning on a red is 
.
Explanation:
Since you can flip either heads or tails with the coin and there are 8 different spinner possibilities, that means there are a total of 16 individual possibilities. Out of the 16 different outcomes, 3 of them match the requirement of flipping tails and spinning on a red, so the fraction to represent the situation would be .
Answer:
The correct answer is A. The government of Iran had difficulty preventing information from getting out of the country during the 2009 election protests because ordinary citizens used thousands of different Internet file sharing sites and e-mail accounts, as well as Twitter, to transmit information.
Explanation:
On June 12, 2009, presidential elections were held in Iran, the favorite of which was the reform candidate Mir Hosejn Musavi. The next day, it was announced that the acting head of state, Mahmoud Ahmadinejad, had received more than two-thirds of the votes. Mousavi marked the results from being falsified and his followers took to the streets. They wore green ribbons (the color of Mousavi's election campaign), uniting liberal clergy, secular intellectuals and national minorities (Musavi is of Azerbaijani origin). Hundreds of thousands of people marched through Tehran, where initially peaceful events grew into violence. The protests spread to other cities, and Iranians living abroad also joined. The core of the movement was students using social networks to organize demonstrations.
I believe it was the 15th century
